DAYTON Pipe Cut brush finish with Horizontal Grooves Tungsten Carbide Ring - 8mmDAYTON Pipe Cut brush finish with Horizontal Grooves Tungsten Carbide Ring 8mm A smooth, brushed finish, split by intermittent grooves, gives this ring a touch of unique style, while still maintaining its subtle character. Available in an 8mm width. Tungsten Carbide jewelry is more scratch resistant that most other materials like gold and platinum. Covered by Thorsten's excellent lifetime warranty.